Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(47)
- Pat, Suat(29)
- Özen, Soner(29)
- Şenay, Volkan(24)
- Korkmaz, Şadan(23)
- Esmer, Yusuf(21)
- Şahin, Engin(21)
- Korkmaz, Özge(20)
- Cuce, Erdem(19)
- Öner, Erdal(18)
- Öztürk, Mesut(18)
- Artar, Musa(17)
- Yilmaz, Mustafa Tahsin(17)
- İspirli, Hümeyra(16)
- Ecem Bayram, Nesrin(15)
- Kaya, Yunus(15)
- Cinar, Mehmet(13)
- Cuce, Pinar Mert(12)
- Kamiloğlu, Aybike(12)
- Kutlu, Naciye(12)
- Mercan, Emin(12)
- Birinci, Ahmet(11)
- Bulut, Mehmet(11)
- Yaylacı, Murat(11)
- Bayram, Ozkan(10)
- Can, Zehra(10)
- Doğan, Zeki(10)
- Kahya, Cem(10)
- Karaali, Rabi(10)
- Pabuçcu, Hakan(10)
- Tosun, Figen Çam(10)
- Özdemir, Akın(10)
- Ayazoglu, Rabil(9)
- Battal, Fetullah(9)
- Bayram, Nesrin Ecem(9)
- Büte, Mustafa(9)
- Ertugrul, Mehmet(9)
- Kadakal, Mahir(9)
- Kaplan, Abdullah(9)
- Sarikaya, İsmail(9)
Yayınlar
- MakaleYalnız künye2010Scopus SJRQ2The first occurrence of the mite family linotetranidae (Acari: Tetranychoidea) in Turkey: Linotetranus anatolicus n. sp
Doǧan, Salih; Dönel, Güldem; Ali Bal, Durmus; Sezek, Fatih
A new species Linotetranus anatolicus Doan and Donel, n. sp. collected from soil, litter, oak bark and moss is herein described and figured. This is the first time that the family Linotetranidae has been recorded from Turkey.
AtıfScopus5WoS4OpenAlex6
İncele - MakaleYalnız künye2010Scopus SJRQ2Complexation of metal ions with the novel diazadithia crown ether carrying two anthryl pendants in acetonitrile-tetrahydrofuran
Parlayan, Semanur; Başoǧlu, Aysel; Ocak, M.; Alp, Hakan; Kantekin, Halit; Ocak, Ümmühan
A new crown ether carrying two anthryl groups with nitrogen-sulfur donor atom was designed and synthesized by the reaction of the corresponding macrocyclic compound and 9-chloromethyl anthracene. The influence of metal cations such as Al3+, Zn2+, Fe2+, Fe3+, Co2+, Ni2+, Mn2+, Cu2+, Cd2+, Hg2+ and Pb2+ on the spectroscopic properties of the ligand was investigated in acetonitrile-tetrahydofuran solution (1/1) by means of absorption and emission spectrometry. Absorption spectra show isosbestic points in the spectrophotometric titration of Fe2+, Fe3+, Al3+, Cu2+ and Hg2+. The results of spectrophotometric titration experiments disclosed the complexation stoichiometry and complex stability constant of the novel ligand with Fe2+, Fe3+, Al3+, Cu2+and Hg2+cations. The presence of excess amounts of Al3+, Zn2+, Fe2+, Fe3+, Co2+, Ni2+, Mn2+, Cu2+, Cd2+, Hg2+ and Pb2+ cations caused an enhancement of anthryl fluorescence. The ligand showed good sensitivity for Zn2+ with respect to other metal cations with linear range and detection limit of 1. 4 × 10-7 to 4. 1 × 10-6 M and 1. 0 × 10-8 M respectively.
- MakaleYalnız künye2010Scopus SJRQ1Characterization of liquefaction susceptibility of sands by means of extreme void ratios and/or void ratio range
Yilmaz, Y.; Mollamahmutoglu, M.
The liquefaction susceptibility of various graded fine to medium saturated sands are evaluated by stress controlled cyclic triaxial laboratory tests. Cyclic triaxial tests are performed on reconstituted specimens having global relative density of 60%. In all cyclic triaxial tests, loading pattern is selected as a sinusoidal wave form with 1.0 Hz frequency and effective consolidation pressure is chosen as 100 kPa. Liquefaction resistance is defined as the required cyclic stress ratio causing initial liquefaction in 10 cycles during the cyclic triaxial test. The results are used to draw conclusions on the effect of the extreme void ratios and void ratio range on the liquefaction resistance of various graded sands.
AtıfScopus48WoS42OpenAlex44İncele - MakaleYalnız künye2010Scopus SJRQ4Production of a novel pectin lyase from Bacillus pumilus (P9), Purification and characterisation and fruit juice application
Nadaroǧlu, Hayrunnisa; Taşkin, Esen; Adigüzel, Ahmet; Güllüce, Medine; Demir, Nazan
Extracellular pectin lyase (EC 4.2.2.10) was produced by Bacillus pumilus (P9) in solid state fermentation. Pectin lyase enzyme was purified 36.36 fold by using DEAE-cellulose anion exchange column chromatography and characterized. Molecular weight of the enzyme was determined as 25 kDa by using Sephadex G-100 gel filtration chromatography. Purification of enzyme was controlled by SDS-PAGE. The optimum pH and temperature of enzyme was determined as pH 6.0 and 60oC, respectively. Pectin lyase was mostly stable at 40°C. Its' activity deceased in 50% for 1h at 60°C and 40% for 4 h at 50°C. Vmax and KM were calculated respectively as 0.298 mg/mL and 132.6 mol/L*min. The presence of 10 mM concentration of Ca2+, Cu2+, Mn2+, Mg2+, Zn2+, Hg2+, Fe2+ and EDTA, L-cystein, ascorbic acid and -mercaptoethanol significantly enhanced the pectin lyase of the purified enzyme. The purified pectin lyase enzyme was used for getting fruits juices. It was determined that yields of fruits juices significantly improved when it was compared with control.
AtıfScopus33İncele - MakaleYalnız künye2009Malzeme Taşıma Odaklı Planlama için Üretim Sistemlerindeki Tezgah Yerleşim Düzenlerinin Benzetim Analizi ile Karşılaştırılması
Aksarayli, Mehmet; Altuntas, Serkan
Günümüzde işletmeler üretim maliyetlerini azaltmak ve verimliliklerinin artırmak için uygun tesis planları yapmak zorundadırlar. Çalışma, üretim sistemlerindeki tesis içi yerleşim problemlerinin çözümüne ulaşmakta kullanılan temel tezgâh yerleşim şekilleri ve ürüne göre yerleşim için önerilen yeni bir yaklaşımı birbirleriyle karşılaştıran bir çalışmadır. Çalışmada özellikle tezgâhlar arasındaki malzeme taşıma süreleri ve bu sürelerin toplam üretim süresi içerisindeki oranları ile ilgilenilmiştir. Buna ek olarak, incelenen tüm tezgâh yerleşim şekillerine göre benzetim modelleri sonucunda elde edilen tezgâhların kullanım yüzdeleri ve ürünlerin üretim miktarları da bu çalışma kapsamında aktarılmıştır. Çalışmada ilk olarak tesis planlamasında kullanılan temel yerleşim şekilleri için bir üretim sistemi tanımlanmıştır. Daha sonra tanımlanan üretim sistemi, her bir yerleşim şekli için tezgâh yerleşimi yapılmıştır. Ardından ürüne göre yerleşim şekli için önerilen yaklaşım aktarılarak üretim sistemi için tezgâh yerleşimi yapılmıştır. Daha sonra tezgâh yerleşim şekilleri "PROMODEL" benzetim yazılımı ortamına aktarılmıştır. Son olarak yapılan analizler ile farklı tezgâh yerleşim şekillerinin malzeme taşıma süreleri ve toplam üretim süresi içerisindeki oranları karşılaştırılmış ve analizlerden elde edilen sonuçlar yorumlanarak aktarılmıştır
AtıfTR Dizin3
İncele - MakaleYalnız künye2009Scopus SJRQ3Az bulunan Barbutiidae familyasının (Acari: Actinedida) Türkiye’deki ilk bulgusu: Barbutia anguineus (Berlese)
Doğan, Salih; Akgül, Güldem Dönel
A newly recorded mite species, Barbutia anguineus (Berlese), collected from Turkey is herein re-described and figured. This is the first record of the family Barbutiidae in Turkey.
AtıfTR Dizin3İncele - MakaleYalnız künye2009Formation of consumption society and consumer behavior - A comparative application -
Çınar, Recai; Çubukçu, İhsan
Basic aim of this study is to appraise consumption understanding of consumer covered by either organizations or mass media tools by the increasing importance of globalization within the terms of “consumption society” and “consumption culture”. There are two parts in the study. In the fist part, the factors affecting consumer’s purchasing behaviours and factors affecting creation of consumer society and consumer culture are considered. In the application part of the study, consumption understandings of consumers, the level of sensitiveness of consumers to the factors that increase consumption and the factors affecting formation of consumption cultere are examined by comparing two seperate studies carried in 1998 and 2008. At he end of the study, we concluded that, consumers of today make up of consumption soceity that depends on consumption objects.
AtıfTR Dizin32İncele - MakaleYalnız künye2009The Foundation of Scouting in Turkey
Taskesenlioglu, M. Yasin
Ottoman Empire officially developed scouting into which it fit a paramilitary structure according to its necessities, it aimed ottoman ( Turkish) youth to be grown up as robust people with healthy bodies. Empire's existence in a state of war during a long time, shrinking of its borders constantly and the army's need of soldiers created the necessity of making the youth to be ready for military service. This need made itself felt thoroughly and was on its peek during the World War I. As a matter of fact, Turkish scouting organization born and as a procedure of pre-draft because of the need for soldiers. This practice stood out first as Ottoman Power Associations and then Ottoman Youth Associations. The associations as mentioned before, were influenced the English scouting experience at first, and then, the German one due to state policies. In particular, Ottoman Youth Associations that were active in most part of the country during the World War I were tried to be reestablished during the Republican Era though they had lost their influence totally in 1920. The paramilitary development of Turkish scouting not only hindered the general and private initiatives but also provided basis for later periods. Scouting in the period starting in 1914 which is the official date of foundation in Turkey, has been revived officially in 1923 after War of Indepedence in spite of the negative effects during the World War I.
- MakaleYalnız künye2009The Comparison of Layout Arrangements for the Material Flow Ordering Planning in Production Systems through Simulation Analysis
Aksarayli, Mehmet; Altuntas, Serkan
Enterprises have to make suitable location planning to decrease their product cost and to increase their productivity in our time. The aim of this study is to compare the basic layout types used in arranging inside facility layout with each other by using simulation. Especially in this study, material handling times between machines and ratio of these times in total times were interested. First of all a new production system is designed to the basic layout types used in arranging inside facility layout. And then in the designed production system, machines are arranged for each machine layout types. Machine layout types are transferred to PROMODEL simulation software. Then with the results of analysis, material handling times of different machine layout types and ratio of material handling times in total production time were compared and the results obtained from this analysis were given after commented on this study.
AtıfWoS7İncele - BildiriYalnız künye2009Scopus SJRQ1Screening of Three Exons of the RET Proto-oncogene in Turkish Patients with Papillary Thyroid Carcinoma
Bayramci, N. S.; Acik, L.; Koc, L. Y.; Vural, G.; Kilic, M.; Tez, M.; Koc, M.; Ercakmak, N.
- MakaleYalnız künye2009Scopus SJRQ3Purification and properties of carbonic anhydrase from bone marrow
Tasgin, Esen; Nadaroglu, Hayrunnisa; Demir, Yasar; Demir, Nazan
In this work, the carbonic anhydrase was purified from bovine bone marrow and investigated its kinetic properties. Carbonic anhydrase was purified from bovine bone marrow using affinity chromatography by sepharose 4B-L-tyrosine sulphanilamide. During purification steps, the activity of enzyme was measured using p-nitrophenyl acetate at pH: 7.4. Optimum pH and optimum temperature values for bovine bone marrow carbonic anhydrase were determined and then K m and Vmax values for the same substrate were obtained by means of Linewearver-Burk graphics. The purification degree for bovine bone marrow was calculated. The Vmax, and Km values at optimum pH and at 20 °C for the substrate (p-nitrophenyl acetate) were 120.418 uμmol/L min and 2.409 x 103 mM, respectively. The K1 and I50 values for sulfanilamide, KSCN, NaN3 and acetazolamide were determined in bovine bone marrow carbonic anhydrase.
AtıfScopus7İncele - MakaleYalnız künye2009Scopus SJRQ2First year Turkish science undergraduates' understandings and misconceptions of light
Yalcin, Mehmet; Altun, Sema; Turgut, Umit; Aggül, Fatma
The present study aims to identify first year Turkish Science undergraduates' understandings and misconceptions of the concept of light and its propagation. For this purpose, an instrument composed of four open-ended questions was developed by the researchers. The diagnostic test was piloted with twenty students and modifications were made prior to the final administration of the test. The content validity of the test questions was assessed by two physics researchers and one lecturer. These questions were administered to a hundred first year undergraduates (aged 16-18) enrolled in the Science Teacher Training Department in Ataturk University in Turkey. In addition, the semi-structured interviews of 30-40 min were conducted with the four students whose responses involved common misunderstanding. All interview records were transcribed and analysed. The findings showed that undergraduates' understanding of light is poor and also they have important and prevalent misconceptions. Identified misconceptions, some of which have been reported in the literature, are discussed qualitatively. The misunderstandings identified were compared with those in the literature. The results have some implications for teaching light, suggesting that a substantial revision of teaching strategies is needed.
AtıfScopus18OpenAlex24İncele - MakaleYalnız künye2009Misconceptions and alternative concepts in biology textbooks: Photosynthesis and respiration; [Ideas falsas y conceptos alternativos en libros de texto de biología: Fotosíntesis y respiración]
Kose, Esra Ozay; Pekel, Osman; Hasenekoglu, Ismet
Textbooks have a specific importance since they are used as the main instruction material. It is important to know that whether commonly used textbooks are adequate in terms of content and presentation. This study was performed to examine whether chapters on "photosynthesis" and "respiration" in the Biology-3 textbooks, that are used in secondary schools in Turkey are sufficient in terms of scientific content or not. We provide examples of the identified misconceptions along with their more acceptable alternatives. As a result, it was determined that biology-3 textbooks are insufficient in respect of scientific content. We recommend that biology-3 textbooks must be improved by correcting the scientific content.
AtıfScopus12İncele - BildiriYalnız künye2009Investigation of the effect of a polypropylene fiber material on the shear strength and CBR characteristics of high plasticity Ankara clay
Mollamahmutoglu, M.; Yilmaz, Y.
Nowadays, many soil improvement methods have evolved with different materials used. In this study, a series of laboratory tests are carried out to investigate the effect of a polypropylene fiber material on the shear strength and California Bearing Capacity (CBR) characteristics of high plasticity Ankara clay. First, geotechnical properties of Ankara clay are presented. Then, results of unconfined compressive strength, triaxial strength (CU type) and CBR tests conducted on the various polypropylene fiber/clay mixtures (0.1%, 0.2%, 0.3% and 0.4% by dry weight) are given. Samples were compacted at optimum moisture contents and maximum dry unit weights obtained from the standard Proctor compaction effort. Standard Proctor compaction tests and CBR tests revealed that percentage of 19 mm length F type polypropylene fiber did not influence much the optimum moisture content, maximum dry unit weight and CBR values. Unconfined compression tests showed that inclusion of fiber content increased the axial strain at failure. Moreover, consolidated-undrained (CU) triaxial test results exhibited that due to inclusion of 19 mm length F type polypropylene fiber, the cohesion intercept decreased slightly but the internal angle of friction increased considerably.
AtıfScopus2İncele - MakaleYalnız künye2008Investigation of effectiveness of demonstrationsimulation based instruction in teaching energy conservation at 7th grade
Aggul, Fatma; Yalcin, Mehmet; Acikyildiz, Metin; Sonmez, Erdal
This study aimed to explore the effect of teaching through demonstrationsimulation on students' achievement of energy conservation in comparison with traditional teaching. The sample consisted of fifty nine 7th grade students from a state primary school in Turkey. In the study, non-equivalent groups pretest-posttest design was used and the data was collected through an achievement test developed by the researchers, Energy Conservation Test. The conservation of energy concept was taught using a demonstration and a simulation in the experimental group and traditional instruction method in the control group. Data collected by the test was statistically assessed applying the analysis of covariance. To explore obviously the class atmosphere in experimental group, it was utilized from the teacher's observation notes and student interviews. The statistical comparison showed that there was a significant difference between groups with respect to students' scores of the test. Moreover, the analysis of the qualitative data indicated that such a class atmosphere supported the constructive and meaningful learning.
AtıfScopus6İncele - MakaleYalnız künye2008Scopus SJRQ1The removal of lignin and phenol from paper mill effluents by electrocoagulation
Uǧurlu, M.; Gürses, A.; Doǧar, Ç.; Yalçin, M.
This study aims to investigate the treatment of paper mill effluents using electrocoagulation. Removal of lignin, phenol, chemical oxygen demand (COD) and biological oxygen demand (BOD) from paper mill effluents was investigated at various current intensities by using different electrodes (Al and Fe) and at various electrolysis times (1.0, 2.5, 5.0 and 7.5 min). It was observed that the experiments carried out at 12 V, an electrolysis time of 2 min and a current intensity of 77.13 mA were sufficient for the removal of these pollutants with each electrode. The removal capacities of the process using an Al electrode were 80% of lignin, 98% of phenol, 70% of BOD, and 75% of COD after 7.5 min. Using an Fe electrode the removal capacities were 92%, 93%, 80% and 55%, respectively. In addition, it was found that removal of lignin, phenol, BOD and COD increased with increasing current intensity. In the experiments carried out at different current intensities, higher removal can be explained through a decrease in intra-resistance of solution and consequently an increase at the transfer speed of organic species to electrodes. It was also found that Al electrode performs higher efficiency than Fe electrode except for COD removal. However, the time required for removal of BOD was more than that of COD. The results suggest that electrocoagulation could be considered as an effective alternative to paper mill effluents treatment.
AtıfScopus257OpenAlex275
İncele - MakaleYalnız künye2005Alan Öğretmeni Yetiştirmede Tezsiz Yüksek Lisans Eğitiminin Sonuçlarının Değerlendirilmesi
Özkan, Esra; Yalçın, Mehmet; Açıkyıldız, Metin; Bayrak, Ramiz; Doğar, Esra; Gürses, Ahmet
Eğitim sistemleri, bilim ve teknolojideki hızlı gelişmeler ve toplumun ihtiyaç duyduğu insan gücü çerçevesinde yeniden şekillenmektedir. Öğretmen yetiştirme sistemleri de bu gelişmelerden doğrudan etkilenmekte, programlar, eğitim-öğretim süreçleri ve altyapı bakımından alternatif yaklaşımlar gündeme gelmektedir. Eğitim Fakültelerinin yeniden yapılanması süreci de bu tartışmaların bir sonucu olarak görülebilir. Bu çalışma, tezsiz yüksek lisans eğitimlerini sürdüren kimya öğretmen adaylarının ortaöğretim kimya öğretmenleriyle öğretmenlik mesleğine karşı tutumlarını karşılaştırmak amacıyla yapılmıştır. Araştırmanın örneklemini 2003-2004 yılı güz döneminde tezsiz Yüksek Lisans programına devam eden 36 kimya öğretmen adayı ve 22 ortaöğretim kimya öğretmeni oluşturmaktadır. Veri toplama aracı olarak anket kullanılmıştır (α=0,92). Yapılan anket çalışması sonuçlarından kimya öğretmen adaylarının ortaöğretim kimya öğretmenleriyle öğretmenlik mesleğine yönelik tutumları arasında önemli bir farkın olmadığı tespit edilmiştir.
AtıfTR Dizin4İncele - BildiriYalnız künye2005Scopus SJRQ4Effect of temperature for the adsorption of methylene blue onto activated carbon produced from waste dogrose seeds
Gürses, Ahmet; Doǧar, Çetin; Açikyildiz, Metin; Özkan, Esra; Bayrak, Ramis
Activated carbon, produced from dogrose (Rosa section Caninae) seeds, was used for the removal of methylene blue (basic dye). Adsorption studies were carried out at 20°C and 40°C at various initial dye concentrations (20, 40, 60, 80, and 100 mg/L) and at different lengths of time (15, 30, 60, and 120 min). Adsorption isotherms of the basic dye on the prepared adsorbent were determined and correlated with common isotherm equations. Fitting of the isotherm data to the BET adsorption isotherm model was better in high concentration ranges than in the other models. Thermodynamic parameters such as change in isosteric adsorption enthalpy (ΔH)y and isosteric adsorption entropy (ΔS)y were also determined to 40.8 kJ and 0.141 kJ, respectively. It was concluded that the adsorption of methylene blue increases with increasing temperature. BET model fitting indicates that the hydrophobic interactions between the dye and the produced active carbon at the first layer and the dipole-dipole interactions between methylene blue molecules and the adsorbed molecules at the secondary layer predominate. To investigate the adsorptive characteristics of the produced active carbon, porosity and BET surface area measurements were made.
AtıfScopus1OpenAlex1İncele